Class: GraphitiGql::Schema::Fields::Attribute

Inherits:
Object
  • Object
show all
Defined in:
lib/graphiti_gql/schema/fields/attribute.rb

Instance Method Summary collapse

Constructor Details

#initialize(resource, name, config) ⇒ Attribute

If sideload is present, we’re applying m2m metadata to an edge



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# File 'lib/graphiti_gql/schema/fields/attribute.rb', line 6

def initialize(resource, name, config)
  @resource = resource
  @config = config
  @name = name
  @alias = config[:alias]
end

Instance Method Details

#apply(type) ⇒ Object 



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# File 'lib/graphiti_gql/schema/fields/attribute.rb', line 13

def apply(type)
  is_nullable = !!@config[:null]
  _config = @config
  _name = @name
  _alias = @alias 
  opts = @config.slice(:null, :deprecation_reason)
  type.field(_name, field_type, **opts)
  type.define_method _name do
    if (readable = _config[:readable]).is_a?(Symbol)
      obj = object
      resource = obj.instance_variable_get(:@__graphiti_resource)
      unless resource.send(readable)
        path = Graphiti.context[:object][:current_path].join(".")
        raise Errors::UnauthorizedField.new(path)
      end
    end

    value = if _config[:proc]
      instance_eval(&_config[:proc])
    else
      if object.is_a?(Hash)
        object[_name] || object[_name.to_s]
      else
        object.send(_alias || _name)
      end
    end
    return if value.nil?

    caster = Graphiti::Types[_config[:type]][:read]
    # Dry::Types can't be instance_exec'd
    # This dependency has probably served it's purpose and can be
    # refactored away
    if caster.is_a?(Proc)
      instance_exec(value, &caster)
    else
      caster.call(value)
    end
  end
end